Can someone help me use AA with DS2 and GTX470 / Nvidia Inspector?

I can't seem to figure AA out for Dead Space 2 and I have tried Inspector but not sure I am doing it right. Love the game but hate the jaggies. What settings do I need in N Control Panel and in-game? I minimize Inspector after inserting compat. string right? Can I get a little Inspector how to? Sorry I haven't ever used Inspector. Thanks for help!